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DVD-R DL (DL stands for Dual Layer [1]), also called DVD-R9, is a derivative of the DVD-R format standard. DVD-R DL discs hold 8.5 GB by utilizing two recordable dye layers, each capable of storing a little less than the 4.7 gigabyte (GB) of a single layer disc, almost doubling the total disc capacity. [2]
DVD recordable discs supporting this technology are backward compatible with some existing DVD players and DVD-ROM drives. [3] Many current DVD recorders support dual-layer technology, and the price is now comparable to that of single-layer drives, though the blank media remain more expensive. The transfer rates reached by dual-layer media for ...
If you own one of the 1.5 million Durabrand DVD players sold at Walmart since 2006, shut it off and head to your nearest Walmart -- they can ignite, the U.S. Consumer Product Safety Commission ...
A specification for dual-layer DVD-RW discs with a capacity of 8.5 GB (8,500,000,000 bytes) was approved by the DVD Forum, [56] and JVC announced their development of the first media in the format in 2005. [57] A double-layer DVD+RW specification was approved in March 2006 with a capacity of 8.5 GB. [58]
A standard single-layer DVD can store up to 4.7 GB of data, a dual-layer DVD up to 8.5 GB. Variants can store up to a maximum of 17.08 GB. [11] Prerecorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD. Such discs are a form of DVD-ROM because data can only be read and not written or erased.
It was resolved with both surviving however: DVD-R predominating for stand-alone DVD recorders and players, and (for computers) most DVD devices being engineered as dual format, to be compatible with both. As of 2007 DVD is the de facto standard for pre-recorded movies, and popular storage of data beyond the capacity of CD.